I need to repaint concrete tiles on my patio. they have been painted previously but the birds peck them when their food falls onto the floor and the same with the possums. I need something I can do myself, with a good paint that wont crack and covers well. I am discouraging the birds and possums because they make so much mess that I have to sort out (as this question) Do I need acid wash, I would think so its a bit grotty but dont know what to do with that either. I am positively ancient so I am a bit slow, but I am a woman so I can do it.....eventually 🙂